Evaporator



Y (No Model.)

H. HILL.

BVA-PORATOB. No. 397,916. Patented Feb, 19, 1889,.

ATTORNEY.

N. Pneus, mmwmhnsnpm. wnminmn. n.1;

UNITED STATES PATENT OEEicE.

HENRY HILL, OF CHESTER CROSS ROADS, OHIO.

EVAPO RATO R.

SPECIFICATION forming part of Letters Patent No. 397,916, dated February 19, 1889.

Apr-:lisation filed September 5, 1888. Serial No. 284,606. (No model.)

spectively provided with laterally-projecting hollow trunnions located in line and at the corners of the pan, opposing trunnions t-elescoping to form tight joints, such trunnions serving as conducts from one pan to another, and serving also as trunnions proper in tilting the pans. The pans along the one end at the intersection of the bottom and end wall, where the trunnions occur, are rounded to fit the trunnions, and from thence the end wall slopes inward to form a trough for retaining the liquid when the pan is tilted. Bent circulating-tubes are provid ed, the short arms of these tribes being adapted to lit snugly inside the hollow trunnions aforesaid. The long arms of these tubes extend some distance into the body of the pan to cause a circulation of the liquid throughout thepans. The circulating-tube maybe removed at pleasure, and by raising or lowering the free ends thereof the passage of liquid from one pan to the other may be regulated. The different pans, commencing with the forward pan over the arch, are provided each with a flange extending under the next adjacent rearward pan to close the intervening space between the pans, and thereby prevent the escape of heat from the arch.

In the accompanying drawings, Figure l is a plan view, partly broken away. Fig. 2 is a side elevation in section on line y y, Fig. l. Fig. 3 is an elevation in section on line o3 at, Fig. l. Fig. a is a corresponding elevation and plan, partly in section. Fig. 5 is an enlarged horizontal section showing more especially the hollow trunnions in position and the short arm of a circulating-tube in position in the trunnion.

A A represent evaporating-pans. These are usually rectangular in form and of any desired size, and are arranged side by side, as shown in Fig. l, and set over a suitable arch orfurnace-for instance, such as shown at B- the front end of the arch being at the left hand in Fig. 1, with smoke-pipe t) shown at the right hand. Each pan is provided with hollow trunnions O C', set in line at the lower corner at one end of the pan, the trunnions from t-he adjacent pans projecting toward each other and telescoping to form tight joints, these trunnions serving as conducts for the passage of .liquid from one pan to another. The outside trunnions, C,rest in halfboxes b', connected with the arch, by which arrangement the pans may be tilted to an inclined or to an upright position; or the pans maybe readily removed from the arch, if necessary. The pans are preferably interchangeable, so that one pan need not remain permanently over thehottest portion of the arch. lf the engaging surfaces of the trunnions are slightly tapering and are fitted with care, tight joints are insured, although the trunnions may turn easily the one within the other. The pan along the edge from one trunnion to the other is rounded, as shown at a, (see Figs, 3 and 4,) to correspond with the trunnions, and from thence the end wall, a', slopes upward and inward, as shown, so that when the pan is tilted even to an upright position a deep trough is had to hold the liquid Auntil it can flow into the next adjacent pan,

and by means of the rounded section afore said the liquid may almost entirely loe drained through the trunnions. A nozzle, a2, connects with the rounded section of each pan for drawing off liquid when need be and for entirely draining the pan when it is tilted to an upright position. Such nozzles are fitted with any suitable stopper. (Not shown.)

Handles A are provided at the ends of the pans opposite the trunnions, for convenience in tilting the pans.

The rear hollow tru union may connect with an induction-tube, otherwise this and the forward trunnion of the series may be plugged, and by removing such plugs these end pans may take their place along the middle of the series of pans.

The trunnions aforesaid may be short, so that the pans need be separated only about IOO Q l 3er/,eis

an ineh, (more orless,) and to Close snehinter- Vening' spa-ce between the pans against the osea-pe of heat from the furnace each pan is provided with a iiangc, A?, extending' rearwardly a short distance under the next adjaeent pan.

ln operating the pans, as itis always the rearward pan that is first tilted, and so on into the trunnion by hand the tube will maintain itself to any position in which it has been atfljusted, and the tree end thereof may be raised or lowered to regulate the tlow of liquid 'from one pan to the other. The long arm of the eirculatingstube extends to near the opposite end et the pans and insures a circulation through the pan, otherwise the liquid would take the shortest course aeross the pan from one tru nnion to the other.

For many years prior to my present iuyention evaporatiing'pans were coupled rudely by means of pipes leading' lrom the end ol the resljn-letiye pans, and such pipes ot adjacent pans were connected by 'means out' ordinary tittiirg,'--suchj tor instance, as elbows, Ts, nipples, elfe. that in ease these joints were not serewedtogether too tightly a pan might be tilted, eertain ot' the screw-jointsturning the one inember in the other, and such tilting' ot the pan by such means has been. in vogue for many years. Such scrow-joints, however, were ill adapted to the purpose, and either worked hard or were leaky, and usually both.

My improved device is cheap, simple, and

Aft er a time it was discovered eii'eetiye, and the pans are easily removed from the areh, it' need be, and are interchangeable, as aforesaid.

That I elaim is* l. The combination, with a series ot' evaporating-pans, of hollow trunnions projecting' .from said pans, the trunnions ot' one pan telescopi ng with the trunnions ol' the next ad jacent pan, and a tube passing through the trunnions and proj eetin g' at one end into the pan, substantially as set forth.

2. The combination, with a series of evaporating-pans, of hollow internally-tapering trunnions projecting' :from said pans, the trunnious of one pan telescoping' with the trunnions ot the next adjacent pan, and al bent tube having' its short arm adj ustably secured within said trunnons, snbsttmtially as forth.

3. The combination, with a series of evaporating-pans, et' hollow trunnions projecting' from said pans, the trunnions ol one pantelescopingv with the trunnions of the next adjoining` pans, and .tlan proj eeting t' rom one bottom edge of each pan and extending' beneath the bottom ol'f the next adjacent pan, substantially as set forth.

l. The combination, with eyaporati11g-pans connected by hollow trunnions, substantially as indicated, olf eireulating-tubes adapted at one end to and turn in the respective hollow trunnions, such eireulatingtube having an elbow, the free end of said tube extending' toward the end'of the pan. opposite the hollow trunnions, substantially as set forth.

In testimony whereof I sign this speeiitieation, in the presence ot two witnesses, this 27th day7 of August, 1888.

f l'lENR'Y HILL. `Witnesses:

CHAs, il'. Donna, ALBERT E. LYNCH. 

